JPH10150628A - Teletex recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To repeat the reproduction of a character broadcasting program without fast-feeding and rewinding a video tape recorder in teletex broadcasting. SOLUTION: This recorder comprises a character data signal separation circuit 21, a character data signal recording and reproducing circuit 22, a character signal switching circuit 23, a synchronization separating circuit 24, a timing generation circuit 25 and a program control circuit 26. The recorder pulls out and records optional character data signal within the vertical fly-back erasing period of a video signal, replaces the recorded character data signal with an optional timing to a character data signal position within the vertical fly-back erasing period of the video signal and records, reproduces and repeatedly reproduces an optional character broadcasting program by combination with a text adapter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recording a text program in a teletext broadcast in a television broadcast.

[0002]

2. Description of the Related Art Conventionally, as a recording device for teletext broadcasting, a method of recording an output video signal from a normal teletext adapter on a video tape recorder is known.

Here, a conventional recording method will be briefly described. FIG. 4 shows a conventional connection at the time of recording of teletext broadcasting. Reference numeral 10 denotes a character multiplex adapter, 2 denotes a video tape recorder, 1 denotes a television receiver, 11 denotes a character signal separation circuit, 12 denotes a CPU circuit, 13 denotes an audio mixing circuit, and 14 denotes a video mixing circuit. It is composed of

[0004] A conventional method of recording a screen of a text multiplex broadcast constructed as shown in FIG. 4 will be described. The video signal output from the monitor terminal of the television receiver 1 is input to the character multiplexing adapter 10 and then transmitted to the character signal separation circuit 1.
In step 1, only the character data signal superimposed on the video signal is extracted. Then, the CPU circuit 12 performs character multiplexing signal processing under a certain rule and outputs a character screen. If there is an additional audio data signal in the character data signal, the character data signal is processed in the same manner and converted into an analog additional audio signal. The video signal and audio signal of the text multiplex broadcast processed in this way are output from the text multiplex adapter and viewed on a television receiver, and at the same time, recorded as a composite video signal on a video tape recorder and reproduced when desired. To display images on a television receiver.

[0005]

However, in the above-described configuration, in order to reproduce an arbitrary program among the character programs once converted into a video signal and recorded, it is necessary to perform fast forward and reverse of the video tape recorder. I had to do it.

Therefore, when an arbitrary text program is repeatedly watched, for example, when karaoke is repeated many times, there is a problem that the video tape recorder must be turned back many times.

[0007]

In order to solve the above-mentioned problems, a text multiplex broadcast recording apparatus of the present invention records a text program as a text data signal, and reproduces the text program by replacing the video signal with a text data portion again. The program is reproduced.

[0008] According to the present invention, by combining with the current character multiplexing adapter, instant reproduction of an arbitrary character program,
Repeated playback can be obtained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a character signal separating circuit from a video signal, a character data signal recording / reproducing circuit, and a character signal switching circuit. The character data signal in the vertical blanking period of the signal is switched to an arbitrary character data signal, and an effect of enabling the immediate reproduction and the repeated reproduction of the arbitrary character data signal is provided.

Next, the invention according to claim 2 of the present invention provides a character signal separation circuit, a character data signal recording circuit,
It has a character signal switching circuit, a synchronization separation circuit, and a timing generation circuit, and generates a timing pulse from a vertical synchronization signal obtained by the synchronization separation circuit to generate character data during a vertical blanking period of a video signal. By inserting a signal and combining it with the current character multiplexing adapter, it has the effect of enabling immediate reproduction of character signal data.

Next, the invention according to claim 3 of the present invention provides a character signal separation circuit, a character data signal recording circuit,
It has a character signal switching circuit, a synchronization separation circuit, a timing generation circuit, and a program control circuit, and generates a timing pulse from a vertical synchronization signal obtained by the synchronization separation circuit to return a video signal vertically. By inserting a character data signal in the line period and combining it with the current character multiplexing adapter, it has the effect of enabling the immediate reproduction of any character signal data selected by the program control circuit.

(Embodiment 1) An embodiment of the present invention described in claims 1 and 2 of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a television receiver, 10 denotes a character multiplex adapter, 11 denotes a character signal separation circuit, 12 denotes a CPU circuit, and 13 denotes a character signal separation circuit.
Is an audio mixing circuit, and 14 is a video mixing circuit. Reference numeral 20 denotes a text multiplex broadcast recording apparatus of the present invention, 21 denotes a character data signal separation circuit, 22 denotes a character data signal recording / reproduction circuit, 23 denotes a character signal switching circuit, 24 denotes a synchronization separation circuit, and 25 denotes a timing pulse. It is a generating circuit.

The video signal output from the monitor terminal of the television receiver passes through the text multiplex broadcast recording apparatus of the present invention when receiving and watching a normal text broadcast, and is transmitted through the text multiplex adapter. Character multiplex processing is performed and a character screen is displayed. When recording a text program, a text data signal is extracted by a timing pulse generated from a synchronization signal obtained by synchronizing a video signal and recorded as 1 or 0 data in a text data signal recording and reproducing circuit. Then, when reproduction is desired, the character data signal to be reproduced is switched to a pulse having an amplitude of 1 or 0 at the transmission position of the character data signal of the current video signal by a timing pulse, and the current character multiplexing adapter performs processing again. The character screen can be displayed.

FIG. 3 is a timing chart of a vertical blanking period of a video signal and a switching timing pulse. (A) is the original video signal, (b) is the switching timing pulse, and (c) is the video signal after the replacement of the character data signal. During the switching timing pulse, the transmitted character data signal is replaced with an arbitrary character data signal.

According to this configuration, the character data signal of the character program is recorded, and the character data signal is replaced within the vertical blanking period of the video signal and combined with the character multiplexing adapter, so that the character program can be immediately converted. Playback and repetitive playback can be performed.

(Embodiment 2) Next, claim 1 of the present invention will be described.
An embodiment of the invention described in claim 3 will be described with reference to FIG.

In FIG. 2, reference numeral 1 denotes a television receiver, 10 denotes a character multiplex adapter, 11 denotes a character signal separation circuit, 12 denotes a CPU circuit, and 13 denotes a character signal separation circuit.
Is an audio mixing circuit, and 14 is a video mixing circuit. Reference numeral 20 denotes a text multiplex broadcast recording apparatus of the present invention, 21 denotes a character data signal separation circuit, 22 denotes a character data signal recording / reproduction circuit, 23 denotes a character signal switching circuit, 24 denotes a synchronization separation circuit, and 25 denotes a timing pulse. The generation circuit 26 is a program control circuit.

When a text program is recorded, an arbitrary text program is selected by a program control circuit, a text data signal of the selected program is extracted by a timing pulse generated from a synchronizing signal obtained by synchronizing a video signal, and a text data signal is extracted. It is recorded in the recording / reproducing circuit. When the user wants to play back, the same timing pulse is used to replace the character data signal to be played back at the transmission position of the character data signal of the current video signal and output it. The current character multiplexing adapter processes the character data signal again to output a character screen. Can be.

According to this configuration, the character data signal of the desired character program is recorded, and the character data signal is replaced within the vertical blanking period of the video signal and combined with the character multiplexing adapter. Immediate reproduction or repeated reproduction of a text program can be performed.

[0021]

As described above, according to the present invention,
The character data signal detected by the character signal separation circuit is recorded, and the immediate recording and reproduction of an arbitrary character program can be performed using the current character multiplex adapter.

[Brief description of the drawings]

FIG. 1 is a block diagram of a text multiplex broadcast recording apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram of a text multiplex broadcast recording apparatus according to Embodiment 2 of the present invention.

FIG. 3 is a timing chart of FIG. 1;

FIG. 4 is a connection configuration diagram at the time of recording of conventional teletext broadcasting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Television receiver 2 Video tape recorder 10 Character multiplex adapter 11 Character signal separation circuit 12 CPU circuit 13 Audio mixing circuit 14 Video mixing circuit 20 Teletext recording device 21 Character data signal separation circuit 22 Character data signal recording circuit 23 Character signal switching Circuit 24 Synchronization separation circuit 25 Timing pulse generation circuit 26 Program control circuit

Claims (3)

[Claims] 1. A character signal separating circuit, a character data signal recording / reproducing circuit, and a character signal switching circuit, wherein a character data signal in a vertical blanking period of a video signal is replaced with an arbitrary character data signal. And a character multiplex broadcast recording apparatus capable of immediately reproducing and repeatedly reproducing an arbitrary character data signal. 2. A character signal separating circuit, a character data signal recording / reproducing circuit, a character signal switching circuit, a synchronization separating circuit,
A timing generation circuit for extracting a character data signal within the vertical blanking period of the video signal and recording a character data signal recorded as 1 or 0 data at an arbitrary timing within the vertical blanking period of the video signal. A character multiplex broadcast recording apparatus that performs switching to a character data signal position as a pulse having an amplitude of 1 or 0, and enables immediate reproduction and repeated reproduction of an arbitrary character data signal in combination with a character multiplex adapter. 3. A character signal separation circuit, a character data signal recording / reproduction circuit, a character signal switching circuit, a synchronization separation circuit,
Having a timing generation circuit and a program control circuit, extracting a character data signal within a vertical blanking interval of a video signal,
Recording the data as 1 or 0 data, and replacing the recorded character data signal with a pulse having an amplitude of 1 or 0 at a character data signal position within a vertical blanking period of the video signal at an arbitrary timing; A character multiplex broadcast recording device that enables immediate reproduction and repeated reproduction of an arbitrary character data signal by combining with a character multiplex adapter.